The IWC SMC light mount is awesome, i used it on my duty gun up until this week when i switched to a VTAC alpha rail and x300. I would look hard at a G2X Tactical, it has 200 lumens and only has the 1 output, no need to switch through modes. I also added a Z59 tail cap to make it "clicky" instead of the annoying G2 twist cap. Here's a link for the mount and light combo should save you some money:
http://www.impactweaponscomponents.c...l-by-surefire/
IWC makes awesome stuff, i also use their hand stop (weapon control mount) and low profile QD socket. Something special about a company that is in America and the owner is answering the phone. I give them my business whenever possible. Heres a photo of my old set-up: